JPH0262364B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a concrete form apparatus used when manufacturing precast concrete members such as slabs in a factory.

Conventional technology In the past, when multiple precast concrete members (hereinafter referred to as PC members) such as slabs were manufactured continuously on a long line in a factory, the formwork used for this was also It has a continuous structure. In such a structure,
Since the formwork on the side of the PC member to be poured is all fixed formwork, there is no risk of the already poured concrete losing its shape due to the vibrations applied to the concrete during concrete pouring. ing.

However, in recent years, in order to improve productivity, attempts have been made to manufacture PC members using an automatic concrete pouring machine with a vibrating body instead of input.

In this case, the side formwork is replaced with a sliding formwork in order to omit the erection and removal of the side formwork and to reduce manufacturing costs.

Problems to be solved by the invention However, when the sliding formwork is used as described above,
When pouring concrete, the formwork at the rear vibrates due to the vibration caused by the vibrating body of the automatic pouring machine, and the sliding formwork passes through the concrete that has already been molded by the sliding formwork. This causes the product to lose its shape and lose its commercial value. This invention was made to solve these problems, and its purpose, as mentioned above, is to prevent the sliding formwork of an automatic pouring machine with a vibrating body from losing its shape even when it passes through it. Our purpose is to provide concrete formwork equipment.

Means for Solving the Problems To describe the present invention with reference to drawings showing embodiments, in FIGS. 1 to 6, on a fixed formwork 1,
An automatic concrete placing machine 4 having a vibrating body 2 and a sliding formwork 3 is movably provided, and the sliding formwork 3
The rear end portion 5 is located rearward than the rear end 6 of the vibrating body 2, and the distance between the rear end portion 5 and the rear end 6 is A.
and an elastic body 7 in the length direction of the fixed formwork 3.
The fixed formwork 1 is divided by providing a large number of joint parts 8 interposed with, and the interval between the joint parts 8 is set as B,
This is a concrete formwork device characterized by the fact that A>B.

Function The automatic pouring machine 4 moves in the direction of arrow A4 in Fig. 1, supplies concrete onto the fixed formwork 1, and
Form a PC member. In this case, the vibrating body 2 vibrates,
PC members are densely formed. Also, the sliding formwork 3 is PC
Slides onto and forms sidewalls of the member. Since the interval A is larger than the interval B, after the rear end 6 of the vibrating body 2 passes over a certain joint 8, the rear part of the sliding formwork 3 slides on the side surface of the PC member. As the molding begins, vibrations transmitted from the vibrating body 2 to the fixed formwork 1 through the concrete are absorbed by the elastic body 7 of the joint part 8, and are hardly transmitted to the fixed formwork 1 through which the vibrating body 2 has passed. ,
The side shape of the PC member on the fixed formwork 1 is maintained without collapsing.

Embodiment The joint portion 8 is provided with shaft holes 10 at each end of the fixed formwork 1 which is formed into segments as shown in FIG.
The elastic body 7 is interposed between the flanges 11, and the pin 12 is loosely fitted into the corresponding shaft hole 10. Stopper 1 inside
3, and an elastic body 7 is interposed between the stopper 13 and the head 14 of the pin 12.

Next, in FIGS. 1 and 2, 16 is a drive device of an automatic driving machine, 17 is a wheel, 18 is a rail,
19 is a power unit for supplying concrete, 20 is a hopper, and 21 is a PC member.

Further, in FIG. 3, polyurethane is used as an example of the elastic body 7. Also, in the same figure, 2
2 is a joint material, which is made of rubber or the like. In addition, the pin 12 is loosely fitted and has a so-called play on the outside thereof, but this play part is formed relatively large and is filled with an elastic material such as rubber (by fitting it into the pin 12). ) may also be considered.

The rail 18 is formed as shown in FIGS. 7 and 8, and is divided into sections in the length direction and connected via the elastic body 7.
It is designed to make it difficult for vibrations to be transmitted. 22 indicates a gap, and 23 indicates a leg.

Further, in FIG. 9, 24 indicates concrete and 25 indicates a screw.

Effects of the Invention The present invention is configured as described above, and the interval A
is formed larger than B, so that after passing over the joint part 8 where the rear end 6 of the vibrating body 2 is located, the rear part of the sliding formwork 3 slides and forms the side surface of the PC member. , the vibration caused by the vibrating body 2 is absorbed by the elastic body 7 of the joint part 8, and is difficult to be transmitted to the fixed formwork 1 through which the vibrating body 2 has passed, so that the side shape of the PC member on the fixed formwork 1 collapses. can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view of the concrete formwork apparatus, FIG. 2 is a schematic plan view thereof, FIG.
The figure is a sectional view taken along the - line in Fig. 3, and Fig. 5 is a transverse sectional view with a part of the concrete formwork device omitted.
FIG. 6 is a detailed diagram with a part of FIG. 5 omitted;
7 is a side view of the rail portion of the concrete formwork apparatus, FIG. 8 is an enlarged detailed view of a portion of FIG. 7, and FIG. 9 is a sectional view showing details of a portion of FIG. 1. DESCRIPTION OF SYMBOLS 1... Fixed formwork, 2... Vibrating body, 3... Sliding formwork, 4... Automatic pouring machine, 5... Rear end, 6... Rear end, 7... Elastic body, 8... ...Joint part, A...Distance,
B... Interval.

Claims (1)

[Scope of Claims] 1. An automatic concrete pouring machine 4 having a vibrating body 2 and a sliding formwork 3 is movably provided on a fixed formwork 1, and a rear end portion 5 of the sliding formwork 3 is provided on the fixed formwork 1. is located behind the rear end 6 of the vibrating body 2, and the rear end 5
The distance between the rear end 6 and the rear end 6 is set to A, and a large number of joints 8 are provided in the length direction of the fixed formwork 3 via elastic bodies 7 to divide the fixed formwork 3, and the distance between the joints 8 is A concrete formwork device characterized in that the interval between the two is B, and A>B. 2 The joint part 8 has a flange 11 having a shaft hole 10 at each end of the fixed formwork 1 formed in segments.
are provided, the elastic body 7 is interposed between the flanges 11, the pin 12 is loosely fitted into the corresponding shaft hole 10, and the flange 11 is provided at one end of each fixed formwork 1 in a predetermined direction. 2. The concrete formwork apparatus according to claim 1, wherein a stopper 13 is provided inside the pin 12, and an elastic body 7 is interposed between the stopper 13 and the head 14 of the pin 12.